Stems | Elongation at break (%) | |
Group-1 E1 + E3 + E4 + E6 | Group-2 E2 | |
Narrow | 1.67 ± 0.09 | 1.56 ± 0.12 |
Medium | 1.71 ± 0.09 | 1.80 ± 0.11 |
Wide | 1.83 ± 0.07 | 1.64 ± 0.10 |